Berino Formation

Berino Formation
Berino Formation
Stratigraphic range: middle Pennsylvanian PreꞒ Ꞓ O S D C P T J K Pg N
Type	Formation
Underlies	Bishop Cap Formation
Overlies	La Tuna Formation
Thickness	555 ft (169 m)
Lithology
Primary	Limestone
Other	Shale
Location
Coordinates	31°58′0″N106°31′30″W / 31.96667°N 106.52500°W
Region	New Mexico
Country	United States
Type section
Named for	Berino, New Mexico
Named by	L.A. Nelson
Year defined	1940
	Berino Formation (the United States) Berino Formation (New Mexico)

Last updated February 15, 2024

The Berino Formation is a geologic formation in the Franklin Mountains of southern New Mexico and western Texas. It preserves fossils dating back to the middle Pennsylvanian.^[1]

Description

The unit consists mostly of fossiliferous limestone with some interbedded shale.^[2] The shale is more abundant in the base of the formation, and the formation as a whole appears brown banded in outcrop. Beds are typically about 20 feet (6.1 meters) thick, with a prominent massive limestone bed 70 feet (21 meters) thick capping the formation.^[1] The total thickness is 555 feet (169 meters). The unit lies on the La Tuna Formation and is overlain by the Bishop Cap Formation.^[2]

The formation is interpreted as resulting from deposition of rhythmically alternating lime and clay in a shallow marine environment.^[1]

Fossils

The Berino Formation contains abundant fossils, including ichnofossils. These include the fusulinid Fusulinella euryteines and brachiopods, corals, and bryozoa. Fragments of petrified wood are found at the base of the formation and are interpreted as remnants of tree trunks carried out to sea.^[1]

History of investigation

The unit was designated the Berino Member of the Magdalena Group by L.A. Nelson in 1937.^[3] Kues and Giles recommended discarding the Magdalena Group and raising the unit to formation rank in 2004.^[4]

Related Research Articles

The Bishop Cap Formation is a geologic formation in the Franklin Mountains of southern New Mexico and western Texas and the Hueco Mountains of western Texas. It preserves fossils dating back to the Moscovian to Kasimovian Ages of the early Pennsylvanian.

The Bone Spring Formation is a geologic formation found in the Delaware Basin in Texas and New Mexico. It preserves fossils dating back to the Leonardian Age of the Permian Period.

The Capitan Formation is a geologic formation found in western Texas and southeastern New Mexico. It is a fossilized reef dating to the Guadalupian Age of the Permian period.

The Cutoff Formation is a geologic formation in Texas and New Mexico, US. It preserves fossils dating back to the Permian period.

The Hueco Formation is a geologic formation in west Texas and southern New Mexico. It preserves fossils dating back to the early Permian period.

The San Andres Formation is a geologic formation found in New Mexico and Texas. It contains fossils characteristic of the late Leonardian (Kungurian) Age) of the Permian Period.

The La Pasada Formation is a geologic formation in the southern Sangre de Cristo Mountains of New Mexico. It preserves fossils dating back to the early to middle Pennsylvanian.

The Red House Formation is a geologic formation found in the Caballo Mountains in New Mexico. It preserves fossils dating back to the middle to late Pennsylvanian.

The Panther Seep Formation is a geologic formation found in the mountain ranges of south-central New Mexico. It preserves fossils dating back to the late Pennsylvanian to early Permian.

The Alamitos Formation is a geologic formation exposed in the southern Sangre de Cristo Mountains of New Mexico. It preserves fossils dating back to the late Pennsylvanian to early Permian periods.

The Bursum Formation is a geologic formation in New Mexico. It preserves fossils dating back to the Early Permian period.

The Gray Mesa Formation is a geologic formation in New Mexico. Its fossil assemblage dates the formation to the Moscovian age of the Pennsylvanian.

The Holder Formation is a geologic formation in the Sacramento Mountains of New Mexico. It preserves fossils dating back to the late Pennsylvanian.

The Atrasado Formation is a geologic formation in New Mexico. Its fossil assemblage dates the formation to the Kasimovian age of the Pennsylvanian. It was formerly known locally as the Wild Cow Formation or the Guadelupe Box Formation.

The Madera Group is a group of geologic formations in northern New Mexico. Its fossil assemblage dates the formation to the middle to late Pennsylvanian period.

The Porvenir Formation is a geologic formation exposed in the southeastern Sangre de Cristo Mountains of New Mexico. It preserves fossils dating back to the middle Pennsylvanian period.

The La Tuna Formation is a geologic formation in the Franklin Mountains of southern New Mexico and western Texas and the Hueco Mountains of western Texas. It preserves fossils dating back to the Bashkirian Age of the early Pennsylvanian.

The Bar B Formation is a geologic formation found the Caballo Mountains of New Mexico. It preserves fossils showing it was deposited in the middle to late Pennsylvanian.

The Lead Camp Limestone is a geologic formation in the San Andres Mountains of New Mexico. It preserves fossils dating back to the middle Pennsylvanian.

The Gobbler Formation is a geologic formation in the Sacramento Mountains of New Mexico. It preserves fossils dating back to the Moscovian Age of the Pennsylvanian Period.

References

1 2 3 4 Harbour, R.L. (1972). "Geology of the northern Franklin Mountains, Texas and New Mexico". U.S. Geological Survey Bulletin. 1298. doi: 10.3133/b1298 .
1 2 Nelson, L.A. (1940). "Paleozoic stratigraphy of the Franklin Mountains, West Texas". American Association of Petroleum Geologists Bulletin. 24 (1): 157–172. doi:10.1306/3D93319A-16B1-11D7-8645000102C1865D.
↑ Nelson, L.A. (1937). "Gastropoda from the Pennsylvanian (Magdalena) of the Franklin Mountains of west Texas [abstract of thesis]". Colorado University Studies. 25 (1): 89–91.
↑ Kues, B.S.; Giles, K.A. (2004). "The late Paleozoic Ancestral Rocky Mountain system in New Mexico". In Mack, G.H.; Giles, K.A. (eds.). The geology of New Mexico. A geologic history (Special Volume 11). New Mexico Geological Society. p. 98.

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[harbour-1972-1] 1 2 3 4 Harbour, R.L. (1972). "Geology of the northern Franklin Mountains, Texas and New Mexico". U.S. Geological Survey Bulletin. 1298. doi: 10.3133/b1298 .

[nelson-1940-2] 1 2 Nelson, L.A. (1940). "Paleozoic stratigraphy of the Franklin Mountains, West Texas". American Association of Petroleum Geologists Bulletin. 24 (1): 157–172. doi:10.1306/3D93319A-16B1-11D7-8645000102C1865D.

[nelson-1937-3] Nelson, L.A. (1937). "Gastropoda from the Pennsylvanian (Magdalena) of the Franklin Mountains of west Texas [abstract of thesis]". Colorado University Studies. 25 (1): 89–91.

[kues-giles-2004-4] Kues, B.S.; Giles, K.A. (2004). "The late Paleozoic Ancestral Rocky Mountain system in New Mexico". In Mack, G.H.; Giles, K.A. (eds.). The geology of New Mexico. A geologic history (Special Volume 11). New Mexico Geological Society. p. 98.

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